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639 lines
18 KiB
639 lines
18 KiB
/*
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* link_gre6.c gre driver module
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Dmitry Kozlov <xeb@mail.ru>
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*
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*/
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#include <string.h>
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#include <net/if.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <linux/ip.h>
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#include <linux/if_tunnel.h>
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#include <linux/ip6_tunnel.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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#include "tunnel.h"
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#define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
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#define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF)
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#define DEFAULT_TNL_HOP_LIMIT (64)
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static void print_usage(FILE *f)
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{
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fprintf(f,
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"Usage: ... { ip6gre | ip6gretap } [ remote ADDR ]\n"
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" [ local ADDR ]\n"
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" [ [i|o]seq ]\n"
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" [ [i|o]key KEY ]\n"
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" [ [i|o]csum ]\n"
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" [ hoplimit TTL ]\n"
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" [ encaplimit ELIM ]\n"
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" [ tclass TCLASS ]\n"
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" [ flowlabel FLOWLABEL ]\n"
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" [ dscp inherit ]\n"
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" [ fwmark MARK ]\n"
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" [ dev PHYS_DEV ]\n"
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" [ noencap ]\n"
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" [ encap { fou | gue | none } ]\n"
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" [ encap-sport PORT ]\n"
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" [ encap-dport PORT ]\n"
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" [ [no]encap-csum ]\n"
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" [ [no]encap-csum6 ]\n"
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" [ [no]encap-remcsum ]\n"
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"\n"
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"Where: ADDR := IPV6_ADDRESS\n"
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" TTL := { 0..255 } (default=%d)\n"
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" KEY := { DOTTED_QUAD | NUMBER }\n"
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" ELIM := { none | 0..255 }(default=%d)\n"
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" TCLASS := { 0x0..0xff | inherit }\n"
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" FLOWLABEL := { 0x0..0xfffff | inherit }\n"
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" MARK := { 0x0..0xffffffff | inherit }\n",
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DEFAULT_TNL_HOP_LIMIT, IPV6_DEFAULT_TNL_ENCAP_LIMIT
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);
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}
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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print_usage(stderr);
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exit(-1);
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}
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static int gre_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
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struct {
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struct nlmsghdr n;
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struct ifinfomsg i;
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char buf[1024];
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} req = {
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.n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)),
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.n.nlmsg_flags = NLM_F_REQUEST,
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.n.nlmsg_type = RTM_GETLINK,
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.i.ifi_family = preferred_family,
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.i.ifi_index = ifi->ifi_index,
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};
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struct rtattr *tb[IFLA_MAX + 1];
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struct rtattr *linkinfo[IFLA_INFO_MAX+1];
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struct rtattr *greinfo[IFLA_GRE_MAX + 1];
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__u16 iflags = 0;
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__u16 oflags = 0;
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unsigned int ikey = 0;
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unsigned int okey = 0;
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struct in6_addr raddr = IN6ADDR_ANY_INIT;
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struct in6_addr laddr = IN6ADDR_ANY_INIT;
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unsigned int link = 0;
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unsigned int flowinfo = 0;
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unsigned int flags = 0;
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__u8 hop_limit = DEFAULT_TNL_HOP_LIMIT;
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__u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT;
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__u16 encaptype = 0;
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__u16 encapflags = TUNNEL_ENCAP_FLAG_CSUM6;
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__u16 encapsport = 0;
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__u16 encapdport = 0;
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int len;
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__u32 fwmark = 0;
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if (!(n->nlmsg_flags & NLM_F_CREATE)) {
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if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0) {
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get_failed:
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fprintf(stderr,
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"Failed to get existing tunnel info.\n");
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return -1;
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}
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len = req.n.nlmsg_len;
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len -= NLMSG_LENGTH(sizeof(*ifi));
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if (len < 0)
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goto get_failed;
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parse_rtattr(tb, IFLA_MAX, IFLA_RTA(&req.i), len);
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if (!tb[IFLA_LINKINFO])
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goto get_failed;
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parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]);
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if (!linkinfo[IFLA_INFO_DATA])
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goto get_failed;
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parse_rtattr_nested(greinfo, IFLA_GRE_MAX,
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linkinfo[IFLA_INFO_DATA]);
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if (greinfo[IFLA_GRE_IKEY])
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ikey = rta_getattr_u32(greinfo[IFLA_GRE_IKEY]);
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if (greinfo[IFLA_GRE_OKEY])
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okey = rta_getattr_u32(greinfo[IFLA_GRE_OKEY]);
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if (greinfo[IFLA_GRE_IFLAGS])
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iflags = rta_getattr_u16(greinfo[IFLA_GRE_IFLAGS]);
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if (greinfo[IFLA_GRE_OFLAGS])
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oflags = rta_getattr_u16(greinfo[IFLA_GRE_OFLAGS]);
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if (greinfo[IFLA_GRE_LOCAL])
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memcpy(&laddr, RTA_DATA(greinfo[IFLA_GRE_LOCAL]), sizeof(laddr));
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if (greinfo[IFLA_GRE_REMOTE])
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memcpy(&raddr, RTA_DATA(greinfo[IFLA_GRE_REMOTE]), sizeof(raddr));
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if (greinfo[IFLA_GRE_TTL])
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hop_limit = rta_getattr_u8(greinfo[IFLA_GRE_TTL]);
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if (greinfo[IFLA_GRE_LINK])
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link = rta_getattr_u32(greinfo[IFLA_GRE_LINK]);
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if (greinfo[IFLA_GRE_ENCAP_LIMIT])
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encap_limit = rta_getattr_u8(greinfo[IFLA_GRE_ENCAP_LIMIT]);
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if (greinfo[IFLA_GRE_FLOWINFO])
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flowinfo = rta_getattr_u32(greinfo[IFLA_GRE_FLOWINFO]);
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if (greinfo[IFLA_GRE_FLAGS])
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flags = rta_getattr_u32(greinfo[IFLA_GRE_FLAGS]);
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if (greinfo[IFLA_GRE_ENCAP_TYPE])
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encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]);
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if (greinfo[IFLA_GRE_ENCAP_FLAGS])
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encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]);
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if (greinfo[IFLA_GRE_ENCAP_SPORT])
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encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]);
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if (greinfo[IFLA_GRE_ENCAP_DPORT])
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encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]);
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if (greinfo[IFLA_GRE_FWMARK])
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fwmark = rta_getattr_u32(greinfo[IFLA_GRE_FWMARK]);
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}
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while (argc > 0) {
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if (!matches(*argv, "key")) {
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unsigned int uval;
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NEXT_ARG();
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iflags |= GRE_KEY;
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oflags |= GRE_KEY;
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if (strchr(*argv, '.'))
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uval = get_addr32(*argv);
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else {
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if (get_unsigned(&uval, *argv, 0) < 0) {
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fprintf(stderr,
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"Invalid value for \"key\"\n");
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exit(-1);
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}
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uval = htonl(uval);
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}
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ikey = okey = uval;
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} else if (!matches(*argv, "ikey")) {
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unsigned int uval;
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NEXT_ARG();
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iflags |= GRE_KEY;
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if (strchr(*argv, '.'))
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uval = get_addr32(*argv);
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else {
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if (get_unsigned(&uval, *argv, 0) < 0) {
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fprintf(stderr, "invalid value of \"ikey\"\n");
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exit(-1);
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}
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uval = htonl(uval);
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}
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ikey = uval;
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} else if (!matches(*argv, "okey")) {
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unsigned int uval;
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NEXT_ARG();
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oflags |= GRE_KEY;
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if (strchr(*argv, '.'))
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uval = get_addr32(*argv);
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else {
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if (get_unsigned(&uval, *argv, 0) < 0) {
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fprintf(stderr, "invalid value of \"okey\"\n");
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exit(-1);
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}
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uval = htonl(uval);
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}
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okey = uval;
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} else if (!matches(*argv, "seq")) {
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iflags |= GRE_SEQ;
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oflags |= GRE_SEQ;
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} else if (!matches(*argv, "iseq")) {
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iflags |= GRE_SEQ;
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} else if (!matches(*argv, "oseq")) {
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oflags |= GRE_SEQ;
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} else if (!matches(*argv, "csum")) {
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iflags |= GRE_CSUM;
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oflags |= GRE_CSUM;
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} else if (!matches(*argv, "icsum")) {
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iflags |= GRE_CSUM;
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} else if (!matches(*argv, "ocsum")) {
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oflags |= GRE_CSUM;
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} else if (!matches(*argv, "remote")) {
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inet_prefix addr;
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NEXT_ARG();
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get_prefix(&addr, *argv, preferred_family);
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if (addr.family == AF_UNSPEC)
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invarg("\"remote\" address family is AF_UNSPEC", *argv);
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memcpy(&raddr, &addr.data, sizeof(raddr));
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} else if (!matches(*argv, "local")) {
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inet_prefix addr;
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NEXT_ARG();
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get_prefix(&addr, *argv, preferred_family);
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if (addr.family == AF_UNSPEC)
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invarg("\"local\" address family is AF_UNSPEC", *argv);
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memcpy(&laddr, &addr.data, sizeof(laddr));
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} else if (!matches(*argv, "dev")) {
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NEXT_ARG();
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link = if_nametoindex(*argv);
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if (link == 0) {
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fprintf(stderr, "Cannot find device \"%s\"\n",
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*argv);
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exit(-1);
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}
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} else if (!matches(*argv, "ttl") ||
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!matches(*argv, "hoplimit")) {
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__u8 uval;
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NEXT_ARG();
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if (get_u8(&uval, *argv, 0))
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invarg("invalid TTL", *argv);
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hop_limit = uval;
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} else if (!matches(*argv, "tos") ||
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!matches(*argv, "tclass") ||
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!matches(*argv, "dsfield")) {
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__u8 uval;
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NEXT_ARG();
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if (strcmp(*argv, "inherit") == 0)
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flags |= IP6_TNL_F_USE_ORIG_TCLASS;
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else {
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if (get_u8(&uval, *argv, 16))
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invarg("invalid TClass", *argv);
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flowinfo &= ~IP6_FLOWINFO_TCLASS;
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flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS;
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flags &= ~IP6_TNL_F_USE_ORIG_TCLASS;
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}
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} else if (strcmp(*argv, "flowlabel") == 0 ||
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strcmp(*argv, "fl") == 0) {
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__u32 uval;
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NEXT_ARG();
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if (strcmp(*argv, "inherit") == 0)
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flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL;
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else {
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if (get_u32(&uval, *argv, 16))
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invarg("invalid Flowlabel", *argv);
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if (uval > 0xFFFFF)
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invarg("invalid Flowlabel", *argv);
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flowinfo &= ~IP6_FLOWINFO_FLOWLABEL;
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flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL;
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flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL;
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}
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} else if (strcmp(*argv, "dscp") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "inherit") != 0)
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invarg("not inherit", *argv);
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flags |= IP6_TNL_F_RCV_DSCP_COPY;
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} else if (strcmp(*argv, "noencap") == 0) {
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encaptype = TUNNEL_ENCAP_NONE;
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} else if (strcmp(*argv, "encap") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "fou") == 0)
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encaptype = TUNNEL_ENCAP_FOU;
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else if (strcmp(*argv, "gue") == 0)
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encaptype = TUNNEL_ENCAP_GUE;
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else if (strcmp(*argv, "none") == 0)
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encaptype = TUNNEL_ENCAP_NONE;
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else
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invarg("Invalid encap type.", *argv);
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} else if (strcmp(*argv, "encap-sport") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "auto") == 0)
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encapsport = 0;
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else if (get_u16(&encapsport, *argv, 0))
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invarg("Invalid source port.", *argv);
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} else if (strcmp(*argv, "encap-dport") == 0) {
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NEXT_ARG();
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if (get_u16(&encapdport, *argv, 0))
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invarg("Invalid destination port.", *argv);
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} else if (strcmp(*argv, "encap-csum") == 0) {
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encapflags |= TUNNEL_ENCAP_FLAG_CSUM;
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} else if (strcmp(*argv, "noencap-csum") == 0) {
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encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM;
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} else if (strcmp(*argv, "encap-udp6-csum") == 0) {
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encapflags |= TUNNEL_ENCAP_FLAG_CSUM6;
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} else if (strcmp(*argv, "noencap-udp6-csum") == 0) {
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encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6;
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} else if (strcmp(*argv, "encap-remcsum") == 0) {
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encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
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} else if (strcmp(*argv, "noencap-remcsum") == 0) {
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encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
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} else if (strcmp(*argv, "fwmark") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "inherit") == 0) {
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flags |= IP6_TNL_F_USE_ORIG_FWMARK;
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fwmark = 0;
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} else {
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if (get_u32(&fwmark, *argv, 0))
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invarg("invalid fwmark\n", *argv);
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flags &= ~IP6_TNL_F_USE_ORIG_FWMARK;
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}
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} else if (strcmp(*argv, "encaplimit") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "none") == 0) {
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flags |= IP6_TNL_F_IGN_ENCAP_LIMIT;
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} else {
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__u8 uval;
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if (get_u8(&uval, *argv, 0) < -1)
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invarg("invalid ELIM", *argv);
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encap_limit = uval;
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flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT;
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}
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} else
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usage();
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argc--; argv++;
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}
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addattr32(n, 1024, IFLA_GRE_IKEY, ikey);
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addattr32(n, 1024, IFLA_GRE_OKEY, okey);
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addattr_l(n, 1024, IFLA_GRE_IFLAGS, &iflags, 2);
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addattr_l(n, 1024, IFLA_GRE_OFLAGS, &oflags, 2);
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addattr_l(n, 1024, IFLA_GRE_LOCAL, &laddr, sizeof(laddr));
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addattr_l(n, 1024, IFLA_GRE_REMOTE, &raddr, sizeof(raddr));
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if (link)
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addattr32(n, 1024, IFLA_GRE_LINK, link);
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addattr_l(n, 1024, IFLA_GRE_TTL, &hop_limit, 1);
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addattr_l(n, 1024, IFLA_GRE_ENCAP_LIMIT, &encap_limit, 1);
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addattr_l(n, 1024, IFLA_GRE_FLOWINFO, &flowinfo, 4);
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addattr32(n, 1024, IFLA_GRE_FLAGS, flags);
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addattr32(n, 1024, IFLA_GRE_FWMARK, fwmark);
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addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype);
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addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags);
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addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport));
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addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport));
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return 0;
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}
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static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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char s2[64];
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const char *local = "any";
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const char *remote = "any";
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unsigned int iflags = 0;
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unsigned int oflags = 0;
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unsigned int flags = 0;
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unsigned int flowinfo = 0;
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struct in6_addr in6_addr_any = IN6ADDR_ANY_INIT;
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if (!tb)
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return;
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if (tb[IFLA_GRE_FLAGS])
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flags = rta_getattr_u32(tb[IFLA_GRE_FLAGS]);
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if (tb[IFLA_GRE_FLOWINFO])
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flowinfo = rta_getattr_u32(tb[IFLA_GRE_FLOWINFO]);
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if (tb[IFLA_GRE_REMOTE]) {
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struct in6_addr addr;
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memcpy(&addr, RTA_DATA(tb[IFLA_GRE_REMOTE]), sizeof(addr));
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if (memcmp(&addr, &in6_addr_any, sizeof(addr)))
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remote = format_host(AF_INET6, sizeof(addr), &addr);
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}
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print_string(PRINT_ANY, "remote", "remote %s ", remote);
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if (tb[IFLA_GRE_LOCAL]) {
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struct in6_addr addr;
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memcpy(&addr, RTA_DATA(tb[IFLA_GRE_LOCAL]), sizeof(addr));
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if (memcmp(&addr, &in6_addr_any, sizeof(addr)))
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local = format_host(AF_INET6, sizeof(addr), &addr);
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}
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print_string(PRINT_ANY, "local", "local %s ", local);
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if (tb[IFLA_GRE_LINK] && rta_getattr_u32(tb[IFLA_GRE_LINK])) {
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unsigned int link = rta_getattr_u32(tb[IFLA_GRE_LINK]);
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const char *n = if_indextoname(link, s2);
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if (n)
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print_string(PRINT_ANY, "link", "dev %s ", n);
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else
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|
print_uint(PRINT_ANY, "link_index", "dev %u ", link);
|
|
}
|
|
|
|
if (tb[IFLA_GRE_TTL]) {
|
|
__u8 ttl = rta_getattr_u8(tb[IFLA_GRE_TTL]);
|
|
|
|
if (ttl)
|
|
print_int(PRINT_ANY, "ttl", "hoplimit %d ", ttl);
|
|
else
|
|
print_int(PRINT_JSON, "ttl", NULL, ttl);
|
|
}
|
|
|
|
if (flags & IP6_TNL_F_IGN_ENCAP_LIMIT)
|
|
print_bool(PRINT_ANY,
|
|
"ip6_tnl_f_ign_encap_limit",
|
|
"encaplimit none ",
|
|
true);
|
|
else if (tb[IFLA_GRE_ENCAP_LIMIT]) {
|
|
int encap_limit = rta_getattr_u8(tb[IFLA_GRE_ENCAP_LIMIT]);
|
|
|
|
print_int(PRINT_ANY,
|
|
"encap_limit",
|
|
"encaplimit %d ",
|
|
encap_limit);
|
|
}
|
|
|
|
if (flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) {
|
|
print_bool(PRINT_ANY,
|
|
"ip6_tnl_f_use_orig_flowlabel",
|
|
"flowlabel inherit ",
|
|
true);
|
|
} else {
|
|
if (is_json_context()) {
|
|
SPRINT_BUF(b1);
|
|
|
|
snprintf(b1, sizeof(b1), "0x%05x",
|
|
ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL));
|
|
print_string(PRINT_JSON, "flowlabel", NULL, b1);
|
|
|
|
} else {
|
|
fprintf(f, "flowlabel 0x%05x ",
|
|
ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL));
|
|
}
|
|
}
|
|
|
|
if (flags & IP6_TNL_F_USE_ORIG_TCLASS) {
|
|
print_bool(PRINT_ANY,
|
|
"ip6_tnl_f_use_orig_tclass",
|
|
"tclass inherit ",
|
|
true);
|
|
} else {
|
|
if (is_json_context()) {
|
|
SPRINT_BUF(b1);
|
|
|
|
snprintf(b1, sizeof(b1), "0x%05x",
|
|
ntohl(flowinfo & IP6_FLOWINFO_TCLASS) >> 20);
|
|
print_string(PRINT_JSON, "tclass", NULL, b1);
|
|
} else {
|
|
fprintf(f, "tclass 0x%02x ",
|
|
ntohl(flowinfo & IP6_FLOWINFO_TCLASS) >> 20);
|
|
}
|
|
}
|
|
|
|
if (flags & IP6_TNL_F_RCV_DSCP_COPY)
|
|
print_bool(PRINT_ANY,
|
|
"ip6_tnl_f_rcv_dscp_copy",
|
|
"dscp inherit ",
|
|
true);
|
|
|
|
if (tb[IFLA_GRE_IFLAGS])
|
|
iflags = rta_getattr_u16(tb[IFLA_GRE_IFLAGS]);
|
|
|
|
if (tb[IFLA_GRE_OFLAGS])
|
|
oflags = rta_getattr_u16(tb[IFLA_GRE_OFLAGS]);
|
|
|
|
if ((iflags & GRE_KEY) && tb[IFLA_GRE_IKEY]) {
|
|
inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_IKEY]), s2, sizeof(s2));
|
|
print_string(PRINT_ANY, "ikey", "ikey %s ", s2);
|
|
}
|
|
|
|
if ((oflags & GRE_KEY) && tb[IFLA_GRE_OKEY]) {
|
|
inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_OKEY]), s2, sizeof(s2));
|
|
print_string(PRINT_ANY, "okey", "okey %s ", s2);
|
|
}
|
|
|
|
if (iflags & GRE_SEQ)
|
|
print_bool(PRINT_ANY, "iseq", "iseq ", true);
|
|
if (oflags & GRE_SEQ)
|
|
print_bool(PRINT_ANY, "oseq", "oseq ", true);
|
|
if (iflags & GRE_CSUM)
|
|
print_bool(PRINT_ANY, "icsum", "icsum ", true);
|
|
if (oflags & GRE_CSUM)
|
|
print_bool(PRINT_ANY, "ocsum", "ocsum ", true);
|
|
|
|
if (flags & IP6_TNL_F_USE_ORIG_FWMARK)
|
|
print_bool(PRINT_ANY,
|
|
"ip6_tnl_f_use_orig_fwmark",
|
|
"fwmark inherit ",
|
|
true);
|
|
else if (tb[IFLA_GRE_FWMARK]) {
|
|
__u32 fwmark = rta_getattr_u32(tb[IFLA_GRE_FWMARK]);
|
|
|
|
if (fwmark) {
|
|
snprintf(s2, sizeof(s2), "0x%x", fwmark);
|
|
|
|
print_string(PRINT_ANY, "fwmark", "fwmark %s ", s2);
|
|
}
|
|
}
|
|
|
|
if (tb[IFLA_GRE_ENCAP_TYPE] &&
|
|
rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) {
|
|
__u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]);
|
|
__u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]);
|
|
__u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]);
|
|
__u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]);
|
|
|
|
open_json_object("encap");
|
|
|
|
print_string(PRINT_FP, NULL, "encap ", NULL);
|
|
switch (type) {
|
|
case TUNNEL_ENCAP_FOU:
|
|
print_string(PRINT_ANY, "type", "%s ", "fou");
|
|
break;
|
|
case TUNNEL_ENCAP_GUE:
|
|
print_string(PRINT_ANY, "type", "%s ", "gue");
|
|
break;
|
|
default:
|
|
print_null(PRINT_ANY, "type", "unknown ", NULL);
|
|
break;
|
|
}
|
|
|
|
if (is_json_context()) {
|
|
print_uint(PRINT_JSON,
|
|
"sport",
|
|
NULL,
|
|
sport ? ntohs(sport) : 0);
|
|
print_uint(PRINT_JSON, "dport", NULL, ntohs(dport));
|
|
print_bool(PRINT_JSON, "csum", NULL,
|
|
flags & TUNNEL_ENCAP_FLAG_CSUM);
|
|
print_bool(PRINT_JSON, "csum6", NULL,
|
|
flags & TUNNEL_ENCAP_FLAG_CSUM6);
|
|
print_bool(PRINT_JSON, "remcsum", NULL,
|
|
flags & TUNNEL_ENCAP_FLAG_REMCSUM);
|
|
close_json_object();
|
|
} else {
|
|
if (sport == 0)
|
|
fputs("encap-sport auto ", f);
|
|
else
|
|
fprintf(f, "encap-sport %u", ntohs(sport));
|
|
|
|
fprintf(f, "encap-dport %u ", ntohs(dport));
|
|
|
|
if (flags & TUNNEL_ENCAP_FLAG_CSUM)
|
|
fputs("encap-csum ", f);
|
|
else
|
|
fputs("noencap-csum ", f);
|
|
|
|
if (flags & TUNNEL_ENCAP_FLAG_CSUM6)
|
|
fputs("encap-csum6 ", f);
|
|
else
|
|
fputs("noencap-csum6 ", f);
|
|
|
|
if (flags & TUNNEL_ENCAP_FLAG_REMCSUM)
|
|
fputs("encap-remcsum ", f);
|
|
else
|
|
fputs("noencap-remcsum ", f);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void gre_print_help(struct link_util *lu, int argc, char **argv,
|
|
FILE *f)
|
|
{
|
|
print_usage(f);
|
|
}
|
|
|
|
struct link_util ip6gre_link_util = {
|
|
.id = "ip6gre",
|
|
.maxattr = IFLA_GRE_MAX,
|
|
.parse_opt = gre_parse_opt,
|
|
.print_opt = gre_print_opt,
|
|
.print_help = gre_print_help,
|
|
};
|
|
|
|
struct link_util ip6gretap_link_util = {
|
|
.id = "ip6gretap",
|
|
.maxattr = IFLA_GRE_MAX,
|
|
.parse_opt = gre_parse_opt,
|
|
.print_opt = gre_print_opt,
|
|
.print_help = gre_print_help,
|
|
};
|